war/src/main/java/pnews/servlet/HTML.java

   1 package pnews.servlet;
   2
   3 import java.io.IOException;
   4 import java.io.UnsupportedEncodingException;
   5 import java.net.URLEncoder;
   6 import java.util.List;
   7 import java.util.logging.Level;
   8 import java.util.logging.Logger;
   9
  10 import com.rometools.rome.io.FeedException;
  11
  12 import net.wpitchoune.pnews.Article;
  13 import net.wpitchoune.pnews.Category;
  14 import net.wpitchoune.pnews.Config;
  15 import net.wpitchoune.pnews.EntityStat;
  16 import net.wpitchoune.pnews.Language;
  17
  18 public class HTML {
  19         private static final String CLASS_NAME= HTML.class.getName();
  20         private static final Logger LOG = Logger.getLogger(CLASS_NAME);
  21
  22         private static void appendA(StringBuffer buf, String child, String href, String cl) {
  23                 buf.append("<a href='");
  24                 buf.append(href);
  25                 buf.append("'");
  26                 if (cl != null) {
  27                         buf.append(" class='");
  28                         buf.append(cl);
  29                         buf.append('\'');
  30                 }
  31                 buf.append('>');
  32                 buf.append(child);
  33                 buf.append("</a>");
  34         }
  35
  36         private static void appendDiv(StringBuffer buf, String child) {
  37                 buf.append("<div>");
  38                 buf.append(child);
  39                 buf.append("</div>\n");
  40         }
  41
  42         private static void appendP(StringBuffer buf, String child) {
  43                 buf.append("<p>");
  44                 buf.append(child);
  45                 buf.append("</p>\n");
  46         }
  47
  48         private static void append(StringBuffer buf, Article a) throws UnsupportedEncodingException {
  49                 buf.append("<div class='article'>\n");
  50
  51                 buf.append("<div class='article-image'>\n");
  52                 if (a.getThumbnail() != null) {
  53                         buf.append("<img class='left' src='");
  54                         buf.append(a.getThumbnail());
  55                         buf.append("'/>\n");
  56                 }
  57                 buf.append("</div>\n");
  58
  59                 buf.append("<div class='article-content'>\n");
  60
  61                 buf.append("<div class='article-title'>\n");
  62                 appendA(buf, a.getTitle(), "/redirect?url=" + URLEncoder.encode(a.getLink(), "UTF-8"), null);
  63                 buf.append("</div>\n");
  64
  65                 buf.append("<div class='article-info'>" + a.getWebsite() + " - " + a.getPublicationDate() + "</div>");
  66
  67                 buf.append("<div class='article-description'>\n");
  68                 if (a.getDescription() != null) {
  69                         buf.append("<p>");
  70                         if (a.getDescription().length() < 512) {
  71                                 buf.append(a.getDescription());
  72                         } else {
  73                                 buf.append(a.getDescription().substring(0, 512));
  74                                 buf.append("[..]");
  75                         }
  76                         buf.append("</p>");
  77                 }
  78                 buf.append("</div>\n");
  79
  80                 buf.append("</div>\n");
  81
  82                 buf.append("</div>\n");
  83         }
  84
  85         private static void appendMenu(StringBuffer buf, Category catActive, Config cfg) {
  86                 String cl;
  87
  88                 buf.append("<nav>\n");
  89                 buf.append("<ul>\n");
  90
  91                 for (Category cat: cfg.getCategories()) {
  92                         if (!cat.getLanguage().equals(catActive.getLanguage()))
  93                                 continue;
  94
  95                         buf.append("<li>");
  96
  97                         if (cat.equals(catActive))
  98                                 cl = "active";
  99                         else
 100                                 cl = null;
 101
 102                         appendA(buf, cat.getLabel(), cat.getURL(), cl);
 103                         buf.append("</li>");
 104                 }
 105
 106                 for (Language l: cfg.getLanguages())
 107                         buf.append("<li><a href='" + l.toURL() + "'>" + l.getLabel() + "</a></li>");
 108
 109                 buf.append("</ul>\n");
 110
 111                 buf.append("</nav>\n");
 112         }
 113
 114         private static String toURL(Category catActive, String entity) {
 115                 try {
 116                         return catActive.getURL() + "?entity=" + URLEncoder.encode(entity, "UTF-8");
 117                 } catch (UnsupportedEncodingException e) {
 118                         LOG.log(Level.SEVERE, "Failed to generate link to entity " + entity, e);
 119                         return catActive.getURL();
 120                 }
 121         }
 122
 123         public static String toHTML(List<Article> articles, Category catActive, String entityActive, Config cfg, ArticleProvider provider) {
 124                 StringBuffer buf;
 125                 int i;
 126                 List<EntityStat> entities;
 127                 String cl;
 128
 129                 buf = new StringBuffer();
 130                 buf.append("<!DOCTYPE html>\n");
 131                 buf.append("<html lang='fr'>\n");
 132                 buf.append("<head>\n");
 133                 buf.append("<meta charset=\"UTF-8\">\n");
 134                 buf.append("<link rel='stylesheet' href='/style.css' />\n");
 135                 buf.append("<title>");
 136                 buf.append(catActive.getTitle());
 137                 buf.append(" - PNews</title>\n");
 138                 buf.append("</head>\n");
 139                 buf.append("<body>\n");
 140
 141                 appendMenu(buf, catActive, cfg);
 142
 143                 try {
 144                         entities = provider.getEntityStats(catActive);
 145
 146                         if (entities.size() > 0) {
 147                                 buf.append("<nav>");
 148                                 buf.append("<ul>");
 149                                 i = 0;
 150                                 for (EntityStat s: entities) {
 151                                         buf.append("<li>");
 152                                         if (entityActive != null && s.getEntity().equals(entityActive))
 153                                                 cl = "active";
 154                                         else
 155                                                 cl = null;
 156                                         appendA(buf, s.getEntity(), toURL(catActive, s.getEntity()), cl);
 157                                         buf.append("</li>\n");
 158                                         i++;
 159                                         if (i > 10)
 160                                                 break;
 161                                 }
 162                                 buf.append("</ul>\n");
 163                                 buf.append("</nav>\n");
 164                         }
 165                 } catch (IllegalArgumentException | FeedException | IOException e2) {
 166                         LOG.log(Level.SEVERE, "Failed to get entities", e2);
 167                 }
 168
 169                 i = 0;
 170                 for (Article e: articles) {
 171                         try {
 172                                 append(buf, e);
 173                         } catch (UnsupportedEncodingException e1) {
 174                                 LOG.log(Level.SEVERE, "Failed to convert article to HTML", e1);
 175                         }
 176                         if (i == 100)
 177                                 break;
 178                         else
 179                                 i++;
 180                 }
 181
 182                 buf.append("</body>\n");
 183                 buf.append("</html>\n");
 184
 185                 return buf.toString();
 186         }
 187 }